Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990 Subkingdom Unibacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990 Division Posibacteria Cavalier-Smith 2002 Subdivision Endobacteria Cavalier-Smith 2002 Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)